NGC 3581B is a barred spiral galaxy located approximately 60 million light-years away in the constellation Hydra. It is part of a group of galaxies known as the NGC 3581 group, which includes several other galaxies that are gravitationally bound to each other. This galaxy is notable for its distinct spiral arms and bright central bar structure, which are characteristic features of barred spiral galaxies. Observations of NGC 3581B contribute to our understanding of galaxy formation and evolution, particularly in how bars influence star formation and the dynamics of galactic structures.